Warning: main() [function.include]: Failed opening

The last week or so the right side of my site (https://hardstar.org) has come up with these errors that say refused to open stream, error on line 4, warning, etc. Check the site and you can see what’s up.

The thing is, I haven’t added or updated or changed anything on the site for two or so weeks, and have never touched the main pages (the ones that are in correlation of the page in question) since I originally opened the site in August, and maybe when I put up the new layout (in October). So for these errors to come up all of a sudden is really strange.

It says the error is on line 4 of my index in wp, here: https://hardstar.org/wp/wp-content/themes/basic/index.php . Feel free to also look it up on the https://validator.w3.org to see the error. The error comes up when it tries to open header.php. You can see in the validator it shows up as:

<meta http-equiv=”content-type” content=” < br / > (without the spaces on the br)

But its not as simple as just going into header.php and removing the weird break – in the actual page the real coding is:

<meta http-equiv=”content-type” content=”<?php bloginfo(‘html_type’); ?>; charset=<?php bloginfo(‘charset’); ?>” />

Which has never been altered since I downloaded the original template. Is this something I should have altered in some way? The original template was found here: https://www.visual-assault.org/wpTheme_basic/

ANY help would be appreciated. Thank you!!